Question

Comment on the statement: no work
is involved in an expansion of gas in
vacuum.​

Answer 1

Answer:

For a free expansion into a vacuum, a gas does no work, as there is no resistance on the gas as it expands, i.e. P=0 and therefore the quantity −PΔV=0 . ... The opposite is true for a compression ( W>0 for the gas).

Answer 2

Explanation: For a free expansion into a vacuum, a gas does no work, as there is no resistance on the gas as it expands, i.e. P=0 and therefore the quantity −PΔV=0 . ... The opposite is true for a compression ( W>0 for the gas).

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